# Gemini 1

> first uncrewed test flight of the Gemini spacecraft in NASA's Gemini program

**Wikidata**: [Q643872](https://www.wikidata.org/wiki/Q643872)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Gemini_1)  
**Source**: https://4ort.xyz/entity/gemini-1

## Summary
Gemini 1 was the first uncrewed test flight of the Gemini spacecraft in NASA's Gemini program, launched on April 8, 1964. This inaugural mission successfully validated the Gemini spacecraft's capabilities in orbit before crewed flights would commence.

## Key Facts
- Gemini 1 was launched on April 8, 1964, from Cape Canaveral Launch Complex 19 using a Titan II GLV rocket
- The spacecraft had a mass of 3,187 kilograms at takeoff
- It completed 3 orbits around Earth with an orbital period of 88.76 minutes
- Mission duration was 17,400 seconds (approximately 4.83 hours)
- The spacecraft splashed down in the Atlantic Ocean on April 12, 1964
- The mission was designated 1964-018A in both COSPAR and NASA's NSSDCA catalog
- Gemini 1 was manufactured by McDonnell Aircraft Corporation and operated by NASA
- It reached an apoapsis of 271 kilometers and a periapsis of 155 kilometers with an orbital inclination of 32.5 degrees

## FAQs
### Q: What was Gemini 1?
A: Gemini 1 was the first uncrewed test flight of the Gemini spacecraft in NASA's Gemini program. Launched on April 8, 1964, it served as the inaugural mission to test the spacecraft's systems and performance in orbit before crewed flights.

### Q: How long was Gemini 1 in space and what was its orbital trajectory?
A: Gemini 1 remained in space for 17,400 seconds (about 4.83 hours) during which it completed 3 Earth orbits. It followed an elliptical orbit with an apoapsis of 271 kilometers, periapsis of 155 kilometers, and an orbital inclination of 32.5 degrees.

### Q: What was the significance of Gemini 1 for the Gemini program?
A: Gemini 1 was the foundational mission of NASA's Gemini program, providing critical test data on the spacecraft's structural integrity, launch vehicle performance, and basic orbital capabilities. Its success paved the way for all subsequent crewed Gemini missions.

### Q: Where did Gemini 1 launch and land?
A: Gemini 1 launched from Cape Canaveral Launch Complex 19 on April 8, 1964. After completing its three orbits, it reentered the atmosphere and splashed down in the Atlantic Ocean on April 12, 1964.

## Why It Matters
Gemini 1 was a critical milestone in NASA's human spaceflight program, establishing the foundation for the entire Gemini series. As the first test flight of the Gemini spacecraft, it validated essential systems and procedures that would be necessary for future crewed missions. The mission demonstrated that the Gemini spacecraft could successfully launch, achieve orbit, and return safely to Earth—a prerequisite for the crewed missions that followed. The data collected from this uncrewed test flight directly informed improvements to the spacecraft and procedures, helping to ensure the safety of astronauts on subsequent Gemini missions. This successful test flight ultimately contributed to the success of the Apollo program by developing and proving techniques for orbital rendezvous, docking, and long-duration spaceflight.

## Notable For
- Being the first mission of NASA's Gemini program, establishing the baseline for all subsequent Gemini flights
- Demonstrating the first successful orbital test of the Gemini spacecraft design, validating its structural integrity and performance
- Utilizing the Titan II GLV launch vehicle, which would become standard for all crewed Gemini missions
- Completing the first successful reentry and splashdown of a Gemini capsule, proving the return system worked as designed

## Body
### Mission Overview
Gemini 1 was the first uncrewed test flight of the Gemini spacecraft and the inaugural mission of NASA's Gemini program. Launched on April 8, 1964, from Cape Canaveral Launch Complex 19, it successfully completed 3 orbits around Earth with a total mission duration of 17,400 seconds.

### Technical Specifications
- Mass: 3,187 kilograms (at takeoff)
- Orbital period: 88.76 minutes
- Apoapsis: 271 kilometers
- Periapsis: 155 kilometers
- Orbital inclination: 32.5 degrees
- COSPAR ID: 1964-018A
- NSSDCA ID: 1964-018A

### Mission Timeline
- Launch: April 8, 1964, from Cape Canaveral Launch Complex 19
- Rocket launch at Cape Canaveral Launch Complex 19
- Completed 3 orbits around Earth
- Atmospheric entry occurred over the Atlantic Ocean
- Splashdown in the Atlantic Ocean on April 12, 1964
- Mission concluded approximately 4 days after launch

### Spacecraft and Launch System
- Spacecraft type: Gemini spacecraft (uncrewed test version)
- Launch vehicle: Titan II GLV (American expendable launch vehicle)
- Manufacturer: McDonnell Aircraft Corporation
- Operator: National Aeronautics and Space Administration (NASA)
- Satellite category: Uncrewed spaceflight, test flight
- Orbital classification: Low Earth orbit

### Legacy and Documentation
- Sitelink count: 31
- Wikipedia title: Gemini 1
- Freebase ID: /m/020y02
- SNAC ARK ID: w6hn5zb0
- Image available at: https://commons.wikimedia.org/wiki/Special:FilePath/Gemini_1.jpg
- Patch image available at: https://commons.wikimedia.org/wiki/Special:FilePath/GeminiPatch.png
- Described by source: Retro Space HD (https://www.youtube.com/watch?v=V_zjxnuS4fE)

## References

1. Jonathan's Space Report
2. Freebase Data Dumps. 2013